97 citations · 474 across the 17 of their papers we have counts for
17 papers
Evolution of eccentric high-mass X-ray binaries. The case of GX 301-2
A. Simaz Bunzel, F. García, J. A. Combi +1
The formation of neutron stars is associated with powerful astrophysical transients such as supernovae. In many cases, asymmetries in the supernova explosions are thought to be res…
X-ray emitting structures in the Vela SNR: ejecta anisotropies and progenitor stellar wind residuals
Vincenzo Sapienza, Marco Miceli, Giovanni Peres +6
The Vela supernova remnant (SNR) shows several ejecta fragments protruding beyond the forward shock (shrapnel). Recent studies have revealed high Si abundance in two shrapnel (A an…
A variable corona for GRS 1915+105
Konstantinos Karpouzas, Mariano Méndez, Federico García +4
Most models of the low frequency quasi periodic oscillations (QPOs) in low-mass X-ray binaries (LMXBs) explain the dynamical properties of those QPOs. On the other hand, in recent…
Progenitors of low-mass binary black-hole mergers in the isolated binary evolution scenario
Federico García, Adolfo Simaz Bunzel, Sylvain Chaty +2
We aim to study the progenitor properties and expected rates of the two lowest-mass binary black hole (BH) mergers, GW 151226 and GW 170608, detected within the first two Advanced…
Stellar wind structures in the eclipsing binary system IGR J18027-2016
Federico A. Fogantini, Federico García, Jorge A. Combi +1
IGR J18027-2016 is an obscured high-mass X-ray binary formed by a neutron star accreting from the wind of a supergiant companion with a 4.57 day orbital period. The source sh…
A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
Federico García, Mariano Méndez, Konstantinos Karpouzas +3
Spectral-timing analysis of the fast variability observed in X-rays is a powerful tool to study the physical and geometrical properties of the accretion/ejection flows in black-hol…
The Comptonising medium of the neutron star in 4U 1636-53 through its lower kilohertz Quasi-Periodic Oscillations
Konstantinos Karpouzas, Mariano Méndez, Evandro M. Ribeiro +3
Inverse Compton scattering dominates the high energy part of the spectra of neutron star (NS) low mass X-ray binaries (LMXBs). It has been proposed that inverse Compton scattering…
Phase transitions in neutron stars and their links to gravitational waves
Milva G. Orsaria, Germán Malfatti, Mauro Mariani +6
The recent direct observation of gravitational wave event and its signal has opened up a new window to study neutron stars and heralds a new era of Astronom…
Spectral evolution of the supergiant HMXB IGR J16320-4751 along its orbit using XMM-Newton
Federico García, Federico A. Fogantini, Sylvain Chaty +1
The INTEGRAL satellite has revealed a previously hidden population of absorbed high-mass X-ray binaries (HMXBs) hosting supergiant (SG) stars. Among them, IGR J16320-4751 is a clas…
Charged Proca Stars
Federico García, Ignacio Salazar Landea
In this paper, we study gauged solutions associated to a massive vector field representing a spin-one condensate, namely the Proca field. We focus on regular spherically-symmetric…
Magnetised Accretion Discs in Kerr Spacetimes II: Hot Spots
Federico García, Ignacio F. Ranea-Sandoval, Tim Johannsen
Context. Quasi-periodic variability has been observed in a number of X-ray binaries harboring black hole candidates. In general relativity, black holes are uniquely described by th…
An X-ray characterization of the central region of the SNR G332.5-5.6
Alejandra E. Suárez, Jorge A. Combi, Juan F. Albacete-Colombo +3
We present an X-ray analysis of the central region of supernova remnant (SNR) G332.5-5.6 through an exhaustive analysis of XMM-Netwon observations with complementary infrared obser…
An internal mechanism for the anti-glitch observed in AXP 1E 2259+586
Ignacio F. Ranea-Sandoval, Federico García
Magnetars are fascinating objects that are thought to be neutron stars powered by their strong internal magnetic fields. Clear evidence of a sudden spin-down was detected in the An…
Magnetised accretion discs in Kerr spacetimes
Ignacio F. Ranea-Sandoval, Federico García
We study the effect caused by external magnetic fields on the observed thermal spectra and iron line profiles of thin accretion discs formed around Kerr black holes and naked singu…
A simple mechanism for the anti-glitch observed in magnetar 1E 2259+586
Federico García, Ignacio F. Ranea-Sandoval
In this short communication we present a simple internal mechanism that accounts for the recently observed anti-glitch in magnetar 1E 2259+586. We propose that the decay of an inte…
The cooling phase of Type I X-ray bursts observed with RXTE in 4U 1820-30 does not follow the canonical F - T^4 relation
Federico García, Guobao Zhang, Mariano Méndez
We analysed the complete set of bursts from the neutron-star low-mass X-ray binary 4U 1820-30 detected with the Rossi X-ray Timing Explorer (RXTE). We found that all are photospher…
On the origin of the jet-like radio/X-ray morphology of G290.1-0.8
Federico García, Jorge A. Combi, Juan F. Albacete-Colombo +3
The origin and evolution of supernova remnants of the mixed-morphology class is not well understood. Several remnants present distorted radio or X-ray shells with jet-like structur…